(Filename: <b86e8855a45c49568a6b63212aff94d9> Line: 0)

Server Exception: IndustrialEntity.RunQueue 

NullReferenceException: Object reference not set to an instance of an object

  at IndustrialConveyor.CheckIfAnyInputPassesFilters (System.Collections.Generic.List`1[T] inputs) [0x00105] in <b86e8855a45c49568a6b63212aff94d9>:0 

  at IndustrialConveyor.RunJob () [0x00096] in <b86e8855a45c49568a6b63212aff94d9>:0 

  at IndustrialEntity+IndustrialProcessQueue.RunJob (IndustrialEntity job) [0x00009] in <b86e8855a45c49568a6b63212aff94d9>:0 

  at ObjectWorkQueue`1[T].RunQueue (System.Double maximumMilliseconds) [0x00084] in <6269ede81f3a44f38b77131ab47405f6>:0 

  at ServerMgr.Update () [0x00502] in <b86e8855a45c49568a6b63212aff94d9>:0 

UnityEngine.DebugLogHandler:Internal_LogException(Exception, Object)

UnityEngine.DebugLogHandler:LogException(Exception, Object)

UnityEngine.Logger:LogException(Exception, Object)

UnityEngine.Debug:LogException(Exception, Object)

ServerMgr:Update()

When it says file name - (Filename: <b86e8855a45c49568a6b63212aff94d9> Line: 0)  I'm already stumped.  And, I'm just an old man/Server owner ... no coding experience.

Thank you

What plugins do you have?

It went away.  @IIIaKa, I have an addiction to plugins ... I say right now, about 175 loaded, and several in the que.  I did shut down so many plugins to see if that was an issue.  After one of my players came online, it stopped.  I went to his base and he has Conveyors ... about 10 of them, in his industrial set up.  I'm going to have to chalk it up that it was something he turned on in his base on arrival that straightened it out.  The error has not returned since then.

FOLLOW UP:

Happened again today, player had about 12 Large Furnaces burning Sulfur, Frags, HQM, and of course, Wood/Charcoal.  He had three Refineries in line buring wood, for Charcoal.  He reports that no charcoal was moving into the boxes. Nothing was moving to the Refineries (Crude or Wood) but the Furnaces were able to recieve all their mats.  Nothing was being sent to the output boxes at all from any Furnace or Refinery. 

We had the player move out the three refineries and just use Furnaces for those boxes.  Everything works fine now and no more errors.  My conclusion is that for some reason, the player cannot mix Lrg Furnaces with Refineries.  Another thread had mentioned Electric Furnaces ... perhaps he too had another entity inline with it, not sure.

But, problem solved, no errors.  I did report this to Facepunch through F7 Report/Bugs ...

Bear